FIELD: ventilation. SUBSTANCE: device has housing which consists of axially alined outer cylinder 1 and inner cylinder 2 with passage 3, detachable heat exchanger 4, and fan made as impeller 5 received in passage 6 and impeller 7 received in passage 3. Inner cylinder 11 of heat exchanger 4 has lateral corrugations 14 and inner baffles made as disks 15. Outer cylinder 10 has ring baffles 16 arranged on its inner side and interposed between corrugations 14. EFFECT: improved design. 2 dwg
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SU1725782A1 |
